Hot Insulation/Cold Insulation Procedure; Figure 7 - Hot/Cold Insulation; Table 2 - Insulating Material And Thickness; Table 3 - Points Requiring Hot/Cold Insulation - York EX Series Installation, Operation & Maintenance Instructions Manual

FORM 155.32-ICOM1.EN.GB
ISSUE DATE: 10/13/2017
HOT INSULATION/COLD INSULATION
PROCEDURE
1. The recommended materials and their thickness
for hot insulation/cold insulation are shown in
Table 2 on page 29.
2. Use a bonding agent, iron wire, iron band, etc. to
fix the hot insulation/cold insulation materials.
Never rivet them. The use of welding pins is not
recommended.
3. Make the outer covering, flanged parts, and evap-
orator water chamber casing easily removable to
facilitate servicing.

TABLE 2 - INSULATING MATERIAL AND THICKNESS

Material Rock wool or glass wool
Thickness 50 mm

TABLE 3 - POINTS REQUIRING HOT/COLD INSULATION

POINT REQUIRING
HOT INSULATION
High Temperature Generator
Flue
Heat Exchanger
Low Temperature Generator
Point Carrying "Hot Insulation" Label
Hot Insulation
Cold Insulation

FIGURE 7 - HOT/COLD INSULATION

JOHNSON CONTROLS
HOT INSULATION
POINT REQUIRING
COLD INSULATION
Evaporator Shell
Evaporator Water Chamber Case
Refrigerant Spray Piping
Refrigerant Blow Piping
• Point Carrying "Cold Insulation" Label
• Valve for vacuuming (factory use only)
SECTION 3 – HANDLING, STORAGE, INSTALLATION AND REASSEMBLY
4. The points that require hot insulation/cold insula-
tion are shown in Table 3 on page 29.
5. The casing of the absorber/condenser water cham-
ber does not require hot insulation/cold insulation.
If insulation is used, make it easily removable.
6. For the high temperature generator, install the in-
sulation in a way to permit removing the front,
sides, and rear separately. In addition, make a re-
movable part around the rear end for inspection of
the temperature relay and sensor.
COLD INSULATION
Polyurethane foam, polystyrene foam, or glass wool
50 mm
Sight Glass
Valve Manipulator
Pressure Gauge
Thermometer Insertion Hole
Relay Insertion Hole
POINT THAT MUST NOT BE
HEAT-INSULATED
LD20188
3
29